@article{Wang2023, 
author = {Jiangwen Wang and Jianan Niu and Wei Sha and Xinhuan Dai and Tianci Huang and Qilin Hua and Yong Long and Junfeng Xiao and Weiguo Hu},
title = {Flexible high-resolution micro-LED display device with integrations of transparent, conductive, and highly elastic hydrogel},
year = {2023},
journal = {Nano Research},
volume = {16},
number = {9},
pages = {11893-11899},
keywords = {flexible, InGaN/GaN, micro light emitting diode (micro-LED), hydrogel},
url = {https://www.sciopen.com/article/10.1007/s12274-023-5731-x},
doi = {10.1007/s12274-023-5731-x},
abstract = {Computer vision techniques are real-time, immersive, and perceptual human-computer interaction technology. Excellent display effect, dynamic surface flexibility, and safe bio-adhesion are essential for various human–computer interaction applications, such as metaverse interfaces, skin-like sensors, and optoelectronic medical devices. However, realizing the flexible matching of inorganic optoelectronic devices and organisms remains a grand challenge for current display technologies. Here, we proposed a novel strategy by combining the optoelectronic advantages of inorganic micro light emitting diode (micro-LED) display and the extraordinary mechanical/biological compatibility of organic materials to overcome this challenge. A highly elastic (greater than 2000% strain), highly transparent (94% visible light transmittance), biocompatible conductive hydrogel composite electrode layer was fabricated. For the first time, we realized the on-chip electrical interconnection of 4900 LED units to form a blue-green light display patch with high resolution (264 PPI), low power consumption (4.4 mW) and adaptive surface attachment. This work demonstrates an integrated scheme and potential applications of flexible high-resolution microdisplays, such as wearable full-color micro-LED smart curved display devices and conformable biomedical monitoring systems.}
}